# CPT 00104

> CPT 00104 is an anesthesia code, so Medicare has no single national rate: payment is (base units + time units) × the locality's anesthesia conversion factor — for example, about $170.14 for a 60-minute case in Dallas, TX under the Q1 2021 release, before sequestration.

## What it is

Anesthesia care during electroconvulsive therapy (ECT), a treatment for severe depression and certain other psychiatric conditions in which a brief electrical stimulus is delivered to the brain under general anesthesia to produce a controlled seizure. The anesthesia is brief but requires a rapid-acting general anesthetic plus a muscle relaxant so the seizure does not cause a visible convulsion or injury, along with airway support for the few minutes the patient is unconscious.

## Selected release

- Release: Q1 2021 (2021 A)
- Effective: January 1 – March 31, 2021
- Status indicator: J
- Office (non-facility) national allowed amount: not published
- Facility national allowed amount: not published
- Sequestration: not applied

## RVUs and formula

- Work RVU: not published
- Office (non-facility) practice expense RVU: not published
- Facility practice expense RVU: not published
- Malpractice RVU: not published
- Conversion factor: 34.8931
- Formula: `(work_rvu × work_gpci + pe_rvu × pe_gpci + mp_rvu × mp_gpci) × conversion_factor`

## Source and citation

- Source: Physician relative value file (Q1 2021)
- CMS file: https://www.cms.gov/files/zip/rvu21a-updated-01052021.zip
- Parsed file: PPRRVU21_JAN.csv, row 4,961
- Canonical page: https://localishealth.com/cpt/00104/2021/A
- Release-specific citation URL: https://localishealth.com/cpt/00104/2021/A
- Last significant update: 2026-08-04T03:10:16+00:00